Help subtracting these fractions please

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SUMMARY

The discussion focuses on the correct method for subtracting mixed fractions, specifically addressing the problem of converting whole numbers and fractions into a common denominator. Participants emphasize the importance of converting mixed numbers into improper fractions before performing operations. The correct answer to the problem presented is 17/20, achieved by properly handling the whole number and fraction components. The conversation highlights common mistakes and clarifies the conventions for writing mixed numbers.

PREREQUISITES
  • Understanding of mixed fractions and improper fractions
  • Knowledge of common denominators in fraction operations
  • Basic arithmetic operations (addition, subtraction) with fractions
  • Familiarity with mathematical notation for fractions
NEXT STEPS
  • Learn how to convert mixed numbers to improper fractions
  • Study the process of finding common denominators for fraction addition and subtraction
  • Explore the conventions for writing mixed numbers and handling negative fractions
  • Practice solving problems involving mixed fractions and improper fractions
USEFUL FOR

Students learning fraction operations, educators teaching arithmetic, and anyone seeking to improve their skills in handling mixed numbers and fractions.

  • #31
FactChecker said:
Your final answer is not how you should ever write a mixed number. You can not simply concatenate the integer +1 and the fraction -3/20 directly to a proper mixed number. The integer part and the fractional part must have the same sign. Change that integer, 1, into a fraction and subtract the fraction numerators to get a valid answer.
Integer you mean the whole number ?
 
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  • #32
chriscarson said:
Integer you mean the whole number ?
Yes
 
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  • #33
FactChecker said:
Yes
So you make 20 × 1 - 3 = 17 then / 20 .
Good looks more clear now for me .
Thanks
 
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